Telephone Voice Changer for VOIP and Skype Telephone Voice Changer for Professional Use Changes Your Voice from Male to Female or Female to Male Heavily Modified BOSS VE-20 Vocal Performer Designed For Use by Professional Performers Now Works with Your Phone Or PC Used Extensively by Law-Enforcement Investigators And Small Businesses Works by Replacing the Corded Handset of Your Telephone - Simply Speak into the Included Headset And Adjust Your Voice Accordingly Comes in a Hard Side Carrying Case with All Necessary Cables and Connectors Including A Test Connector For Instant Focal Feedback